Fractions


Finding the Least Common Denominator

When two or more Fractions have Different Denominators, the Least Common Denominator must be determined. The Least Common Denominator is the Least Number that can be evenly divided by all Denominators.





2
5
1
2
The Least Common Denominator of these two fractions is 10.


10 ÷ 5 = 2
10 ÷ 2 = 5


1
4
3
8
The Least Common Denominator of these two fractions is 8.


8 ÷ 4 = 2
8 ÷ 8 = 1


RULE

Finding the Least Common Denominator of two or more Fractions


The Least Common Denominator is the Smallest Number that can be evenly divided by Both Denominators.